Advanced Analog Technology, Inc.

Transcription

1 Details are subject to change without notice Advanced Analog Technology, Inc. Features omplete PWM Power ontrol ircuitry Precision eference: 1.25±1% (25 o ) Low Operating oltage: 2.5 to 6.5 Under-oltage Lockout Protection 5 or 3.3 Selectable Over oltage Lockout Protection (AAT1101/A only) AAT1101/AAT1101A/AAT1101: 500kHz Fixed AAT1101B: 50k~1MHz Programmable Internal Power Up Sequence ontrol Totem Pole Output Output Short ircuit Protection Low Dissipation urrent: 2.5mA (f=500khz, Duty=50%) Pin onfiguration IE2 PDB OUT2 OUT3 OUT1 GND SP TOP IEW IE3 IE1 EO 1 PDS H OS (OS) (N) EF (TSSOP-16 PAKAGE) TIPLE OUTPUT TFT LD PWM ONTOLLE General Description The AAT1101 series provide an integrated triple-channel pulse width modulation (PWM) solution for the power supply of LD displays. These devices offer system engineers the flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, deadtime control (DT) and output driver. The under-voltage protection, over voltage protection, power sequence control, shutdown control circuit, oscillator, short circuit protection, and voltage reference circuits are the common features of the three channels. The AAT1101 series contain two exclusive boost circuits at H1, H3 and an exclusive buck_boost circuit at H2. AAT1101 s Power Up sequence initiates at H1 then H2 and finally H3. AAT1101A/ s Power Up sequence acts in the order of H2, H3, and then H1. AAT1101B s Power Up sequence starts from H2, H1, and then H3. At the completion of the Power Up sequencing, the SP pin stays low and enters the Wait State of short circuit protection. Power Up sequencing delay and short circuit protection delay are set by connecting a capacitor to the SP pin. Furthermore, these devices can operate with supply voltage ranging from 2.5 to 6.5 and function efficiently in an environment with low power supply. With a minimum number of external components, the AAT1101 series offer a simple and cost effective solution for TFT LD. Advanced Analog Technology, Inc. Page 1 of

2 Pin Description Pin # Name I/O Description 1 IE2 I Inverted Input of Error Amplifier 2 (EA2) 2 PDB O Power eady Output 3 I Supply oltage 4 OUT2 O hannel 2 (H2) Output 5 OUT3 O hannel 3 (H3) Output 6 OUT1 O hannel 1 (H1) Output 7 GND Ground 8 SP I Short ircuit Protection 9 EF O eference oltage Output 10* OS I/O 3.3 or 5.0 Over oltage Selection and Over oltage Output 10** OS I/O Frequency Setting apacitor & esistor Input 10*** N N 11 H O hannel ontrol 12 PDS I Power eady Set 13 EO1 I/O Feedback Input of Error Amplifier 1 (EA1) 14 IE1 I Inverted Input of Error Amplifier 1 (EA1) 15 IE3 I Inverted Input of Error Amplifier 3 (EA3) 16 I Shutdown ontrol * AAT1101A only ** AAT1101B only *** AAT1101 only Absolute Maximum atings HAATEISTIS SYMBOL ALUE UNIT Supply oltage 8 Input oltage ( IE ) I Output urrent Output Peak urrent Output oltage O +0.3 H1, H3 41/+21 ma H2 I O 21/+41 ma Sink ( t w 2 µ s, Duty 10%) +200 I opeak Source ( t w 2 µ s, Duty 10%) Operating Free-Air Temperature ange Storage Temperature ange 200 T 20 to +85 T storage 45 to +125 Advanced Analog Technology, Inc. ma Page 2 of o o

3 ecommended Operating onditions Supply oltage, Supply oltage, Advanced Analog Technology, Inc. (with OS (without OS Supply oltage, (AAT1101B/ Only ) ) Symbol Min Typ Max Unit Input oltage, IE1, IE3 I Input oltage, IE2 I Output oltage O 0 - Output urrent, I out1, I out3 I O /+20 ma Output urrent, I out2 I O /+40 ma Output urrent of Error Amplifier I µa Operating Free-Air Temperature OE T o Advanced Analog Technology, Inc. Page 3 of

4 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (See Note 1) Oscillator AAT1101/AAT1101A/AAT1101 Parameter Test ondition Min Typ Max Unit Frequency f OS T = 25 o khz Frequency hanges with T Maximum Duty ycle f T % T % xon Oscillator AAT1101B only Frequency Parameter Test ondition Min Typ Max Unit H Level Output oltage L Level Output oltage Frequency hange with f OS OSH OSL f Frequency hanges with T Output Source urrent OS = 130pf, = 7k Ω OS OS OS OS OS = 130pf, = 7k Ω = 130pf, = 7k Ω = 2.5 to 6.5, T = 25 o OS OS = 130pf, = 7k Ω khz % f T % I µ A OS Advanced Analog Technology, Inc. Page 4 of

5 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (ont.) Under oltage (U) and Over oltage (O) Protection Parameter Test ondition Min Typ Max Unit U Upper Threshold oltage U Lower Threshold oltage UPH UPL U Hysteresis ( UPH UPL ) HYS O 3.3 Threshold oltage** O 5 Threshold oltage** **: AAT1101/AAT1101A only T = 25 o, AAT1101/A/B T = 25 o, AAT T = 25 o, AAT1101/A/B T = 25 o, AAT T = 25 o, AAT1101/A/B T = 25 o, AAT OP33 T = 25 o OP5 T = 25 o, OS connects a 56 k Ω resistor to Shutdown ontrol Parameter Test ondition Min Typ Max Unit Shutdown elease Input oltage Shutdown Enable Input oltage Short ircuit Protection ontrol Parameter Test ondition Min Typ Max Unit r1 H1 (EO1) Input Threshold oltage H3 (IE3) eset oltage by eset oltage by Short-ircuit Detection Threshold oltage SP Terminal Source urrent r1 H2 (IE2) r2 T = 25 o T = 25 o r I µ A SP Advanced Analog Technology, Inc. Page 5 of

6 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (ont.) Power eady Output Parameter Test ondition Min Typ Max Unit Power eady Threshold PTH T oltage Power eady Source urrent I µa PTH Power-Up Sequence Delay Parameter Test ondition Min Typ Max Unit Under oltage Power eady t 5 P t P - s t P = (. ) PDS Under oltage H1 Output t P - t P - s H1 Output H2 Output t H1 t H1=( ) SP - t H1 - s H2 Output H3 Output t H2-0.8 t H1 - s H3 Output H Set High t H3-0.8 t H1 - s H3 Output SP eady to Protect SP Enable Time t H3-0.8 t H1 - s t SP - 32 H1 t - s Advanced Analog Technology, Inc. Page 6 of

7 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (ont.) Power-Up Sequence Delay (for AAT1101A/AAT1101) Parameter Test ondition Min Typ Max Unit Under oltage Power eady Under oltage H2 Output H2 Output H3 Output t PA P 5 t =( ). PDS - t PA - s t PA - t PA - s t H2A t H2 =( ) SP - t H2A - s H3 Output H1 Output H1 Output H Set High H1 Output SP eady to Protect SP Enable Time t H3A H2A t H1A H2A t H1A H2A t SPA - 32 H2A t - s t - s t - s t - s Power-Up Sequence Delay (for AAT1101B) Parameter Test ondition Min Typ Max Unit Under oltage Power eady Under oltage H2 Output H2 Output H1 Output t PB P 5 t =( ). PDS - t PB - s t PB - t PB - s t =( ) SP - t H2B - s t H2B H2 H1 Output H3 Output H3 Output H Set Hi H3 Output SP eady to Protect SP Enable Time t H3B H2B t H1B H2B t H1B H2B t SPB - 32 H2B t - s t - s t - s t - s Advanced Analog Technology, Inc. Page 7 of

8 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (ont.) eference oltage Parameter Test onditions Min Typ Max Unit eference oltage I EF = 1mA, T = 25 o EF Short-ircuit Output urrent Input oltage egulation Output egulation eference oltage hange with Temperature I = ma OS I O T EF I EF = 1mA, = 2.5 to 6.5 I EF = 0.1mA to 1mA m m I EF = 1mA (Note 2) m EA1 (Error Amplifier for hannel 1) Parameter Test ondition Min Typ Max Unit Input Offset oltage Input Bias urrent Input oltage ange Open-Loop oltage Gain IO Unity Gain m I IB I = 0.95 to ±10 ±20 na I A FB O OS+ = 200k db Unity-Gain Bandwidth BW MHz ID = 0.1, Output oltage Swing OS Output Sink urrent I OS+ I O = 60µ A ID = 0.1, I O = 0.2mA ID = 0.1, O = ma Output Source urrent I OS ID = 0.1, O = µa H2 Input eference T oltage r4 = 25 o m Advanced Analog Technology, Inc. Page 8 of

9 Electrical haracteristics, = 3.3 (Unless Otherwise Specified) (ont.) Output Stage Parameter Test ondition Min Typ Max Unit I O = 20mA (H2) High-Level Output oltage OH I O = 40mA (H1, H3) Low-Level Output oltage ise time Fall time OL ISE I O = 20mA (H1, H3) I O = 40mA (H2) t L = 1000pF 130 ns t L = 1000pF 50 ns FALL Operating urrent Parameter Test ondition Min Typ Max Unit I Duty = 50%, No Load ma Supply urrent ON I µa T (dev) and f T are specified at T =25 o. Note 1: Typical values of all parameters except for Note 2: The deviation parameter T (dev) is defined as the difference between the maximum and minimum values obtained over the recommended free-air temperature range ( 20 o to 85 o ). Advanced Analog Technology, Inc. Page 9 of

10 Block Diagram AAT1101/AAT1101A Only EO1 EN13 IE 1 ref = 1.25 dtc1=0.9 PW M 1 OUT1 EA1 EN2 IE2 EO2 dtc2=0.5 OUT2 r4 = 0.7 PW M 2 EA2 EN13 IE3 ref = 1.25 EO3 dtc3=0.9 PW M 3 OUT3 EA3 EF EF ref OS ULO UN SD GND SD U U EN1 EN2 EN3 H PDB SP& Seq trl UP UP PDS 4µA PTH = µA r 3 = 1.25 SP U r 1 = EO EO3 EO2 OS OLO O r 2 = 0.25 SD UN Advanced Analog Technology, Inc. Page 10 of

11 Block Diagram AAT1101B Only EO1 EN13 IE 1 ref = 1.25 dtc1=0.9 PW M 1 OUT1 EA1 EN2 IE2 EO2 dtc2=0.5 OUT2 r4 = 0.7 PW M 2 EA2 EN13 IE3 ref = 1.25 EO3 dtc3=0.9 PW M 3 OUT3 EA3 EF OS SD EF U ref OS U EN1 EN2 EN3 ULO UN SD GND H SP& Seq trl UP PDB UP 2µA r 3 = 1.25 SP PDS 4µA r 1 = PTH = 1.28 EO EO3 EO2 U r 2 = 0.25 UN SD Advanced Analog Technology, Inc. Page 11 of

12 Block Diagram AAT1101 Only EO1 EN13 IE 1 ref = 1.25 dtc1=0.9 PW M 1 OUT1 EA1 EN2 IE2 EO2 dtc2=0.5 OUT2 r4 = 0.7 PW M 2 EA2 EN13 IE3 ref = 1.25 EO3 dtc3=0.9 PW M 3 OUT3 EA3 EF EF ref OS ULO UN SD GND SD U U EN1 EN2 EN3 H PDB SP& Seq trl UP UP PDS 4µA PTH = µA r 3 = 1.25 SP U r 1 = EO EO3 EO2 r 2 = 0.25 UN SD Advanced Analog Technology, Inc. Page 12 of

13 Application ircuit AAT1101/AAT1101A Only k Ω Advanced Analog Technology, Inc. P p1 EO1 OUT1 L D p1 IE1 p3 IE3 P L D p3a Optional ircuit 2 p3 N2 OUT3 O ptional ircuit 1 v EF IE2 EF AAT1101/ AAT1101A OUT2 k Ω P n2 P PDB L PDS PDS H PDB OS *Note 3 ovs L O ptional ircuit 3 SP SP GND Optional ircuit 4 *Note 3: =5, connects a OS =56k Ω to =3.3, connects no resistor to Note: All voltage and current values in block diagram (for AAT1101/AAT1101A) are nominal. Advanced Analog Technology, Inc. Page 13 of

14 Application ircuit AAT1101B Only Advanced Analog Technology, Inc. P p1 EO1 OUT1 L D p1 IE1 p3 IE3 P L D p3a Optional ircuit 2 p3 N2 OUT3 IE2 AAT1101B EF vref P Optional ircuit 1 OUT2 n2 P PDB L PDS PDS H PDB OS OS Optional ircuit 3 SP GND osc osc SP All voltage and current values in block diagram are nominal. Advanced Analog Technology, Inc. Page 14 of

15 Application ircuit AAT1101 Only Advanced Analog Technology, Inc. P p1 EO1 OUT1 L D p1 IE1 p3 IE3 P L D p3a Optional ircuit 2 p3 N2 OUT3 Optional ircuit 1 vref IE2 AAT1101 EF OUT2 P n2 P PDB L PDS PDS H PDB Optional ircuit 3 SP GND SP Advanced Analog Technology, Inc. Page 15 of

16 Timing hart AAT1101 Advanced Analog Technology, Inc. UPH EF PTH PDS PDB OS EO1 OUT1 P1 SP OUT3 P3A P3 OUT2 N2 DT1 r1 r3 r4 Advanced Analog Technology, Inc. Page 16 of

17 Timing hart AAT1101A/AAT1101 UPH ref r1 PDS r3 r4 PDB OS EO1 OUT1 P1 SP OUT3 P3A P3 OUT2 N2 PTH DT1 Advanced Analog Technology, Inc. Page 17 of

18 Timing hart AAT1101B Advanced Analog Technology, Inc. PDB OUT3 OUT1 Advanced Analog Technology, Inc. Page 18 of

19 PAKAGE DIMENSION 16-PIN TSSOP Advanced Analog Technology, Inc. Advanced Analog Technology, Inc. Page 19 of

20 PAKAGE DIMENSION (ONT.) SYMBOLS DIMENSIONS IN MILLIMETES DEMINSIONS IN INHES MIN TYP MAX MIN TYP MAX A A A b D E E e L y θ o 0 o 4 o 8 o 0 o 4 o 8 NOTE: 1. ONTOLLING DIMENSION: MILLIMETES 2. LEAD FAME MATEIAL: OLIN 7025/EFTE 64T 3. DIMENSION D DOES NOT INLUDE MOLD FLASH, TIE BA BUS AND GATE BUS. MOLD FLASH, TIE BA BUS AND GATE BUS SHALL NOT EXEED [0.15 MILLIMETES] PE END. DIMENSION E1 DOES NOT INLUDE INTELEAD FLASH. INTELEAD FLASH SHALL NOT EXEED [0.25 MILLIMETES] PE SIDE. 4. DIMENSION b DOES NOT INLUDE DAMBA POTUSION. ALLOWABLE DAMBA POTUSION SHALL BE [0.08 MILLIMETES] TOTAL IN EXESS OF THE b DIMENSION AT MAXIMUM MATEIAL ONDITION. DAMBA ANNOT BE LOATED ON THE LOWE ADIUS O THE FOOT. MINIMUM SPAE BETWEEN POTUSION AND AN ADJAENT LEAD TO BE [0.07 MILLIMETES]. 5. TOLEANE: ± [0.25 MILLIMETES] UNLESS OTHEWISE SPEIFIED. 6. OTHEWISE DIMENSION FOLLOW AEPTABLE SPE. 7. EFEENE DOUMENT: JEDE SPE MO-153. Advanced Analog Technology, Inc. Page 20 of

21 TAPE AND EEL PAKING METHOD: 2,500PS/EEL, 1 EEL/BOX Advanced Analog Technology, Inc. Page 21 of

22 TAPE AND EEL (ONT.) Advanced Analog Technology, Inc. NOTE: SPOKET HOLE PITH UMULATIE TOLEANE ± 0.2 MILLIMETES. 2. AMBE NOT TO EXEED 1 MILLIMETE IN 100 MILLIMETES. 3. MATEIAL: ANTI-STATI BLAK ADANTEK POLYSTYENE. 4. A 0 AND B 0 MEASUED ON A PLANE 0.3 MILLIMETES ABOE THE BOTTOM OF THE POKET. 5. K 0 MEASUED FOM A PLANE ON THE INSIDE BOTTOM OF THE POKET TO THE TOP SUFAE OF THE AIE. 6. POKET POSITION ELATIE TO SPOKET HOLE MEASUED AS TUE POSITION OF POKET, NOT POKET HOLE. PAT MAKING TSSOP16 TOP MAKING AAT1101 XXXXXX TSSOP16 BAK MAKING YYWW Advanced Analog Technology, Inc. Page 22 of

23 ODEING INFOMATION Advanced Analog Technology, Inc. Advanced Analog Technology, Inc. Page 23 of